NPL's commercial services are built on 100 years of leadership in accuracy, innovation and scientific research. Experienced consultants and project managers draw upon a unique combination of industry know-how and world-leading scientific discovery to deliver real-world business solutions and enable innovation and secure competitive advantage.

We strive to actively promote public awareness and appreciation of science and technology, particularly the importance of measurement and the role of NPL. Here you can find out more about the interesting things we do, science outreach activities you can get involved in or take a look at some of our educational resources.

If the constants are constant why do they need updating? (FAQ - Quantum)

What is evolving is our knowledge of the constants not as far as we know their values, which for the purposes of evaluation are considered constant. As technology improves ever more precise experiments give more information on the value of the constants, and this is periodically evaluated, sometimes showing previous estimates to be in error. The possibility of the underlying constants changing is a separate issue, and of fundamental importance to physics.